U.S. Taxation 2026: S Corporations (Updated Schedules)

Various US Citizens/green card holders have ventured into U S Corporation as S Corporation as a convenient mode or trading as an integral part of its business. Nearly 3.3 million tax payers fall under this category. It is time the latest instructions from irs.gov, the federal government arm of the U S Federal government.

What is a S Corporation?

Quoting directly from irs.gov, our well known American federal government website for income tax purposes, “S corporations are corporations that elect to pass corporate income, losses, deductions, and credits through to their shareholders for federal tax purposes.”

The web site is reproduced below:

https://www.irs.gov/pub/irs-pdf/i1120.pdf

Further, it explains a salient feature of its basic nature further as under:

“Shareholders of S corporations report the flow-through of income and losses on their personal tax returns and are assessed tax at their individual income tax rates. This allows S corporations to avoid double taxation on the corporate income. S corporations are responsible for tax on certain built-in gains and passive income at the entity level.”

To qualify for S corporation status, the corporation must meet the following requirements:

• Be a domestic corporation
• Have only allowable shareholders
  • May be individuals, certain trusts, and estates and
  • May not be partnerships, corporations or non-resident alien shareholders
• Have no more than 100 shareholders
• Have only one class of stock
• Not be an ineligible corporation (i.e. certain financial institutions, insurance companies, and domestic international sales corporations) “

To become a S Corporation, it must submit Form 2553, Election by a Small Business Corporation which should be signed by all stake holders. Detailed instructions as to how to fill up the form will be covered later in this article.

Failure to adhere to the instructions on S Corporation issued by IRS has landed several S Corporations into deeper troubles and financial issues. This reason alone propels this writer to quote extensively for giving legal information.

Form no. 2553 reproduced below:

https://www.irs.gov/pub/irs-pdf/f2553.pdf

Instructions for form no.2553 are as under:

https://www.irs.gov/pub/irs-pdf/i2553.pdf

Why does the corporation choose S Corporation status and are they some advantages? 

• An S corporation can easily be set up under any State law with the same liability protection like a regular C Corporation.
• Pass through taxation – S Corporation does not pay tax at entry level. With the passage of income, loss, and deductions passing on to the shareholder, the corporation avoids paying double taxation like a C Corporation.
• Self-employment tax – To the often-repeated refrain of my clients whether net come passing through to the shareholder is subjected to self-employment tax or payroll tax, the answer is negative in nature.
• But net operating losses would automatically pass on to the shareholder to be claimed in his/her tax return.

If someone can claim these as advantages, the obvious disadvantages can also be summed up as under: 

• Only one class of stock: An S corporation can have only one class of stock and all shareholders enjoy equal rights of distributions. But special allocations are not allowed. Some loans can even violate one-class-of-stock rule and eventually would result in loss of S- Election.
• Loan basis – By assuming some liability on a loan does not increase the shareholder’s basis unless it is a direct loan to the corporation.
• Avoidance of distribution of profit – To the specific question, whether profit distribution can be delayed till such time the shareholder would be in a lower tax bracket, the distributions easily pass on the income to the shareholder automatically and there is no question of avoidance of distribution of income which is not unusual in case of a C Corporation which is also called as an advantage by C Corporation.

Filing deadline 

We are not aware of the question regarding the tax return to be filed until informed as Form 1120 S which is due 15^th day of the third month following the end of the Corporation’s tax year, which is naturally March 15 for a Calendar Year Corporation.

Schedule K and K-1, K-2, and K-3

S Corporations File Form 1120 S as tax entity for filing their tax returns. 

Form 1120 S may be viewed at the web site quoted below: 

https://www.irs.gov/pub/irs-pdf/f1120s.pdf

Form 1120 S includes form 1120 s, schedule B, Schedule K, L, M 1 , and M 2.

Details of Form 1120 S are explained page wise:

• Page 1 (Income, deductions, tax and payments)
• Page 2 Schedule B, the following additional information is solicited.

• Whether Accounting method: a. Cash b Accrual Yes/ No c Other (specify)
• At any time during the tax year, was any shareholder of the corporation a disregarded entity, a trust, an estate, or a nominee or similar person? If “Yes,” attach Schedule B-1, Information on Certain Shareholders of an S Corporation.
• At the end of the tax year, did the corporation: a Own directly 20% or more, or own, directly or indirectly, 50% or more of the total stock issued and outstanding of any foreign or domestic corporation?
• Own directly an interest of 20% or more, or own, directly or indirectly, an interest of 50% or more in the profit, loss, or capital in any foreign or domestic partnership (including an entity treated as a partnership) or in the beneficial interest of a trust?
• A) At the end of the tax year, did the corporation have any outstanding shares of restricted stock?  If “Yes,” complete lines (i) and (ii) below.
• (i) Total shares of restricted stock . . . . . . (ii) Total shares of non-restricted stock . . . . . .
• B) At the end of the tax year, did the corporation have any outstanding stock options, warrants, or similar instruments? If “Yes,” complete lines (i) and (ii) below. (i) Total shares of stock outstanding at the end of the tax year. (ii) Total shares of stock outstanding if all instruments were executed.
• Has this corporation filed, or is it required to file, Form 8918, Material Advisor Disclosure Statement, to provide information on any reportable transaction?
• Check this box if the corporation issued publicly offered debt instruments with original issue discount . . . . . If checked, the corporation may have to file Form 8281, Information Return for Publicly Offered Original Issue Discount Instruments.
• If the corporation (a) was a C corporation before it elected to be an S corporation or the corporation acquired an asset with a basis determined by reference to the basis of the asset (or the basis of any other property) in the hands of a C corporation, and (b) has net unrealized built-in gain in excess of the net recognized built-in gain from prior years, enter the net unrealized built-in gain reduced by net recognized built-in gain from prior years.
• Did the corporation have an election under section 163(j) for any real property trade or business or any farming business in effect during the tax year?
• Does the corporation satisfy one or more of the following? See instructions
• a .The corporation owns a pass-through entity with current, or prior year carryover excess business interest expense.
• The corporation’s aggregate average annual gross receipts (determined under section 448(c)) for the 3 tax years preceding the current tax year are more than $31 million and the corporation has business interest expense.
• c The corporation is a tax shelter and the corporation has business interest expense. If “Yes,” complete and attach Form 8990, Limitation on Business Interest Expense Under Section 163(j).
• Does the corporation satisfy both of the following conditions?
• a The corporation’s total receipts (see instructions) for the tax year were less than $250,000. b the corporation’s total assets at the end of the tax year were less than $250,000. If “Yes,” the corporation is not required to complete Schedules L and M-1.
• Other information was enquired under columns 12-17.

• Page 3 (Schedule- K,)
  • Prescribed under 1-18 columns headed under income/loss, deductions, credits, international, AMT items, items affecting shareholder basis, other information, and reconciliation. Various information will be collected, like, net short term capitals gain/loss, loss term capital gains/loss under schedule D, 28% gain, 1250 gain, 1231 gain, section 179 deduction etc. are enquired.
  • Page 4 (Schedule L)
  • Balance sheets as per books with assets, and liabilities and shareholders’ equity containing columns 1-27 have been enquired.
  • Page 5 (Schedule M-1 and Schedule M-2)
  • Schedule M-1
  • Reconciliation of Income (Loss) per Books with Income (Loss) per Return Note: The corporation may be required to file Schedule M-3.
  • Schedule M-2
  •  Analysis of Accumulated Adjustments Account, Shareholders’ Undistributed Taxable Income Previously Taxed, Accumulated Earnings and Profits, and Other Adjustments Account
  • ———————————————————————————————
  • Let us learn the basics of the schedules K1, K2, and K3 which were added in 2023 onwards for meeting the needs of partnerships from foreign countries.

One can have a look at Schedule K1

https://www.irs.gov/pub/irs-pdf/f1120ssk.pdf

It consists of three parts as under:

1. Part I Information About the Corporation like A Corporation’s employer identification number, B Corporation’s name, address, city, state, and ZIP code, C IRS Center where corporation filed return, and D Corporation’s total number of shares Beginning of tax year. End of tax year

2. Part II Information About the Shareholder like E Shareholder’s identifying number F1 Shareholder’s name, address, city, state, and ZIP code, F2 If the shareholder is a disregarded entity, a trust, an estate, or a nominee or similar person, enter the individual or entity responsible for reporting: TIN Name F3 What type of entity is this shareholder? G Current year allocation percentage . . . % H Shareholder’s number of shares Beginning of tax year . . . . . End of tax year .. I Loans from shareholder Beginning of tax year . . . . . $ End of tax year . .

3. Part III Shareholder’s Share of Current Year Income, Deductions, Credits, and Other Items like 1 Ordinary business income (loss) 2 Net rental real estate income (loss) 3 Other net rental income (loss) 4 Interest income 5a Ordinary dividends 5b Qualified dividends 6 Royalties 7 Net short-term capital gain (loss) 8a Net long-term capital gain (loss) 8b Collectibles (28%) gain (loss) 8c Unrecaptured section 1250 gain 9 Net section 1231 gain (loss) 10 Other income (loss) 11 Section 179 deduction 12 Other deductions

Schedule K 2

Let me input the above schedule from IRS web site.

https://www.irs.gov/pub/irs-pdf/f1120sk2.pdf

Though a long form, its basic contour can be explained a bit though it needs an expert handling of a CPA.

SCHEDULE K-2 (Form 1120-S) Department of the Treasury Internal Revenue Service Shareholders’ Pro Rata Share Items—International Attach to Form 1120-S. Go to www.irs.gov/Form1120S for instructions and the latest information

Part I Corporation’s Other Current Year International Information

Part II Foreign Tax Credit Limitation

It extends from column 1 to column 55 from sales to net income/loss under various heads like

• Part II Foreign Tax Credit Limitation from a) U S Source, (b) Foreign branch category income (c) Passive category income (d) General category income (e) Other (category code (f) Sourced by shareholder (g) Total.
• Part III Other Information for Preparation of Form 1116 Section 1—R&E Expenses Apportionment Factors
• Section 2—Interest Expense Apportionment Factors
• Section 3—Foreign Taxes
• Part IV Distributions From Foreign Corporations to S Corporation (a) Name of distributing foreign corporation (b) EIN or reference ID number (c) Date of distribution (d) Functional currency of distributing foreign corporation (e) Amount of distribution in functional currency
• Part V Information on Shareholders’ Section 951(a)(1) and Section 951A Inclusions a Separate category (enter code—see instructions)
• b If U.S. source, complete as a separate Part V by separate category and check box
• Part VI Information Regarding Passive Foreign Investment Companies (PFICs)
• Part VII S Corporation’s Interest in Foreign Corporation Income (Section 960)

Let us look at Schedule K3 with some information from its 15 pages.

https://www.irs.gov/pub/irs-pdf/f1120sk3.pdf

Schedule K-3 (Form 1120-S) 2025 Shareholder’s Share of Income, Deductions, Credits, etc.—International

Information About the Corporation A Corporation’s employer identification number (EIN)

B Corporation’s name, address, city, state, and ZIP code

Information About the Shareholder

C Shareholder’s identifying number

D Shareholder’s name, address, city, state, and ZIP code

E Check to indicate the parts of Schedule K-3 that apply.

F Check if applicable. Amended K-3

Part I Shareholder’s Share of Corporation’s Other Current Year International Information

Part II Foreign Tax Credit Limitation

(It has 1-45 columns inviting information under foreign source such as  (a) U.S. source (b) Foreign branch category income (c) Passive category income (d) General category income (e) Other category code (f) Sourced by shareholder (g) Total.

Part III Other Information for Preparation of Form 1116

Part IV Distributions from Foreign Corporations to S Corporation

Part V Information on Shareholder’s Section 951(a)(1) and Section 951A Inclusions

Part VI Information Regarding Passive Foreign Investment Companies (PFICs)

Part VII Shareholder’s Share of S Corporation’s Interest in Foreign Corporation Income (Section 960)

In a nutshell, we may infer from the above discussions, the following details.

An S corporation filing Form 1120-S must complete Schedules K-2 and K-3 if it has items in the return that relate to the international provisions of the Internal Revenue Code. The S corporation’s shareholder(s) need this information to properly complete their individual tax returns.

Schedule K-2 is an extension of Schedule K, while Schedule K-3 is an extension of Schedule K-1 and reports the shareholder’s share of the items on Schedule K-2.

Schedules K-2 and K-3 consist of seven parts. Parts II through VII cover the most common international tax provisions of the IRC, while Part I is used to indicate any attachments to the schedules.

Only the parts relevant to the S corporation’s international activities need to be completed, and when the form or return is printed only the first page and the parts that include information are printed. Penalties may apply if required information is missing.

More information about 1120 S.

Who are the eligible shareholders of a S Corporation?

The list is:

• Individuals – U.S. citizens or residents
• Decedent’s estates
• Bankruptcy estates
• IRC 501 (C) (3) Charitable organizations
• Qualified Sub Chapter S Trusts
• Electing Small Business Trusts
• Employees stock option plans
• Qualified pension plans
• Qualified profit-sharing plans

The ineligible shareholders do raise their heads and clamour for mention as under:

• Corporations
• Partnerships
• Charitable remainder trusts
• IRAs
• Simplified employee pensions
• SIMPLE plans
• State and local governments
• Simple – member LLCs (If the LLC has elected to tax itself as a corporation)

What about ineligible Corporations? 

• A financial institution using reserve method of accounting for bad debts
• Insurance companies
• A Corporation that elects itself to be treated as a possessions corporation under IRC section 936
• A domestic international sales corporation.

One-Class-of-Stock Rule  

A corporation that does have more than one class of stock gets itself disqualified as a S Corporation. Offering identical rights to distribution rights and liquidation proceeds is a sign of existence of one type of stock. Yes, one does make the inference that the stock confers identical rights from the corporation’s governing provisions, which are well defined in the regulations as the corporate charter, articles of incorporation, bylaws, applicable state law, or binding agreements. It is strange that one should make a S Corporation to make it ineligible by simply having more than one class of stock.

Some specialist CPAs have opined that any time distributions are made to shareholders, each one of them must receive a distribution in proportion to the percentage of stock owned. Distributions that may differ either in timing or amount invariably lead one to conclude that second class of stock have been created resulting in termination as S Corporation.

It is important to note that IRS does not take kindly to violations as explained above.

Let us hear how a corporation elects itself as a S Corporation and the procedural aspects thereof.

Form 2553, Election by a Small Business Corporation is filed by any Corporation to elect to be taxed as an S Corporation. The due date for this election obviously falls on 15^th of the third month of the tax year when the election has to take place. Our simple knowledge indicates March 15 for a calendar year corporation. Yes, the corporation make the election in one year for application in the next tax year.

Now the additional procedural aspects.

Naturally, all the shareholders have to give consent to an S Corporation election by signing form 2553. One can refer to above form in the following web site.

www.irs.gov/pub/irs-pdf/f2553.pdf

Form 2553 leads one with 4 pages and involving also 4 parts. An eligible non-corporate entity that files Form 2553 is said to have made the selection as an S Corporation and will be taxed as such. This obviates the need to file Form 8832, Entity Classification Election in order to choose S Corporation election.

Form 2553 requires share holder information like the name, address, taxpayer ID, information about stock ownership, and taxable year of the share- holder. This also facilitates non-requirement of future shareholders to make the same selection.

 What is the S Corporation Shareholder’s basis both on stock basis as well as loan basis?

Important points to understand:

• All distributions of cash or property and flow through deductions are applied first against stock basis. If there would be sufficient stock basis to absorb the amounts, there is no taxable income to the shareholder, and the losses and deductions are fully allowed on the shareholder’s tax return.

Let us analyse a little better. If a distribution of cash or property exceeds stock basis, the excess is treated as a taxable capital gain. These deductions are taken into consideration before flow-through losses and deductions.

Obviously, anyone can deduct that loan basis is a second tier of basis that can be applied to deduct flow-through losses and deductions only if the stock basis has been reduced to zero. It is clearly understood that stock basis gets priority over loan basis.

One significant difference between stock basis and loan basis is that tax-free distributions are to be taken against stock basis only and not loan basis. Yes, continuing our argument, the existence of zero stock basis, enables a distribution to be called as a non-taxable repayment of a shareholder loan instead of a distribution.

S Corporation Shareholder’s basis can be increased or decreased. Is it so?

This is answered under the following plus and minus of shareholder’s basis. 

Basis gets increased by: 

• Ordinary income
• Separately stated income items
• Stock purchases and additional capital contributions
• Tax-exempt income
• Express depletion

Basis also gets decreased and if so, by:

• Distributions
• Non-deductible expenses
• Ordinary loss
• Separately stated loss items.

Stock basis in any case can’t go below zero.

Loans

Yes, direct loans.

By giving direct loan to the S Corporation, a shareholder can increase his loan basis

By Internal Revenue Code 1366(d) (1) (B), a loan increases basis by “the shareholder’s adjusted basis of any indebtedness of the S Corporation to the shareholder” It is very clear that the shareholder has directly lent loan to the S Corporation rather than being a guarantor. The basis is not even increases as per a tax court ruling in case the transaction lacks economic substance.

Interestingly, any increase from income items must be applied towards increasing the basis in loan which were in place at the beginning of the year. The loan basis is restored up to the loan

balance (Original loans less repayments).

Termination of a S Corporation

This article very clearly gave various examples when an S Corporation terminates and becomes a C Corporation. Occurrence of any one of the following situations do result in such a situation:

• Shareholder revokes the election
• The corporation fails to qualify as an S Corporation
• The Corporation violates the passive income restrictions (For corporations with earnings and profits)

Passive investment violation

An S Corporation election shall terminate if passive investment income exceeds 25% of gross receipts for three consecutive taxable years, and the corporation has accumulated earnings and profits from periods when the corporation was existing as a C Corporation. The termination will happen on the first day of the taxable year after three-year period.

However, an inadvertent termination can be rectified by the corporation by taking adequate steps within a reasonable time. Definite permission from IRS is needed to reverse the process.

However, there is a 5-year waiting period for reinstatement of S Corporation election when termination really took place in normal circumstances. 

Let us conclude our discussions with a real-life instance from an old court case. 

Real happening  

The tax payer in one of the states in U.S.A. took out annual loans from his wholly-owned partnership, which in turn was lent to his S Corporation. The situation continued with the S Corporation paying equivalent amounts of rent back to the partnership. The tax court observed that the tax payer did not acquire a basis in the indebtedness of the S Corporation since the transaction involved a circular flow of funds and the tax payer indeed, did not have an economic out lay. (Kerzner, T.C. Memo 2009-76)

This article explains the concept of S Corporation, the strengths and weaknesses of the Corporation, who can be an eligible/ineligible shareholder, the loan basis and stock basis of the stockholder in the S Corporation, one stock one class rule, and the ways to increase the basis of a stock holder in the corporation and similarly what decreases his/her basis.

With these types of corporations becoming the back bone of American taxation, it is ideal to know about them.

Reference

Given at point of need.

Advice

Definitely my article does not intend to be used as tax advice. Kindly use a CPA for tax consultation.